基于三角模糊数序贯博弈的电网安全研究  

Research on Power Grid Security Based on Triangular Fuzzy Number Sequential Game

作　　者：洪超 施宇锋 匡晓云 许爱东 张宇南 HONG Chao;SHI Yufeng;KUANG Xiaoyun;XU Aidong;ZHANG Yunan(CSG Electric Power Research Institute,Guangzhou 510663,China;Zhejiang Tenglong Cyber Security Technology Co.,Ltd.,Hangzhou 311225,China)

机构地区：[1]南方电网科学研究院有限责任公司,广东广州510663 [2]浙江腾珑网安科技有限公司,浙江杭州311225

出　　处：《自动化仪表》2024年第2期64-68,共5页Process Automation Instrumentation

基　　金：广东省电力系统网络安全企业重点实验室开放基金资助项目(GPKLPSNS-2021-KF-04)。

摘　　要：智能电网系统面临着复杂性、多样性的网络安全风险。针对电网工艺漏洞攻防双方在博弈分析中无法对信息属性损失作出准确判断的问题,提出了一种三角模糊数序贯博弈模型。以序贯博弈树方法进行智能电网攻防博弈,构建出攻击者和防御者的最优策略,实现对智能电网的工控安全防护。通过对智能电网攻击者和防御者构建序贯博弈模型,得到攻防博弈效用。提出运用三角模糊数和概率分布向量的方法来构建非模糊化损失,得到攻防双方清晰化的系统损失值。对三角模糊数序贯博弈算法和贝叶斯序贯算法进行比较,得到智能电网均衡路径中的攻击者和防御者的最优策略,以保障智能电网网络安全运行和防护。该研究为智能电网以及典型工控系统网络安全博弈提供参考。Smart grid system faces complexity and diversity of network security risks.Aiming at the problem that both attackers and defenders of power grid process vulnerability cannot make accurate judgment on the loss of information attributes in the game analysis,a triangular fuzzy number sequential game model is proposed.The sequential game tree method is used to carry out the smart grid attack and defense game,and the optimal strategies of attackers and defenders are constructed to realize the industrial control security protection of the smart grid.By constructing sequential game model for smart grid attackers and defenders,the attack and defense game utilities are obtained.It is proposed to use the method of triangular fuzzy numbers and probability distribution vectors to construct the non-fuzzy loss,and get the clarified system loss values of both attackers and defenders.The triangular fuzzy number sequential game algorithm and the Bayesian sequential algorithm are compared to obtain the optimal strategies of the attacker and the defender in the equilibrium path of the smart grid to ensure the safe operation and protection of the smart grid network.The study provides a reference for smart grid as well as typical industrial control system network security game.

关 键 词：智能电网 序贯博弈 三角模糊数 逆向归纳法 工控信息安全 攻防效用 

分 类 号：TH-39[机械工程]